FROM TALIABU. 127 



upper surface, a dark band below the periphery, lighter 

 near the umbilicus. Whorls 5, moderately convex ; last whorl 

 depressed near the suture. The shell, in fresh condition, will 

 prove to be covered by a yellowish epidermis, as traces of it are 

 present. Sculpture consisting of conspicuous lines of growth, 

 crossed on the upper part by impressed spiral striae and 

 a few, rather irregular, obsolete, spiral lirae. Last whorl 

 slightly keeled, aperture oblique, circular, peristome thick, 

 double, the inner margin simple, the outer much expanded 

 aud reflected at the outer and upper part, forming a strong 

 sutural fold, in one specimen nearly a tube. Interior of 

 aperture white, of the peristome yellowish, 



Diam. raaj. 25, alt. 12 ; apert. alt. (oblique) 8, lat. 8'/.^ Mill. 



The specimens have been collected in a dead state, without 

 operculum; thus the generic position is somewhat uncertain, 

 as it resembles also some species of Pterocyclos ; as however 

 the surrounding isles are only inhabited by Cyclotus, I have 

 located it in that genus. The species is somewhat inter- 

 mediate between C. pruinosus Martens and C. pyrostoma 

 Smith ; with the latter it agrees by its strong shell with 

 rather conspicuous lirae, which are however not so strong 

 as in that species ; with pruinosus it agrees by the sutural 

 fold of the peristome, which is wanting in pyrostoma. Though 

 the shell is bleached, it seems that the interior of the 

 aperture has never been red-coloured as in C. pyrostoma. 

 C. pruinosus is a much thinner shell, with stronger epidermis, 

 much weaker lirae, and the peristome is for the largest 

 part, nearly flatly expanded. 



15. Cyclotus guttatus Pfr. var. 



Martens, Ostas. Laudschn. p. 119, PL 1, figs. 7 et 1^. 



Sarasin, Landschn. v. Celebes, p. 41, PI. 2, figs. 20, 



20a, 21 et 2] a, PI. 3, fig. 20i\ 



The specimens agree very well with the figures of P. and 

 F. Sarasin, aud show the particularities mentioned (1. c.) of 

 the specimens from Celebes, namely the less developed outer 



Notes from the Ijeyden JMuseum, "Vol. XX.VIII. 



